The same name reads completely differently depending on the face. Choose by where the seal is going.
Serif — formal documents
The finishing strokes give serif faces weight and composure, which suits contracts, certificates and corporate seals. Noto Serif KR, Nanum Myeongjo and Hahmlet work particularly well.
Sans — office stamps
Even, heavy strokes stay legible when pressed small, which is what approval stamps, date stamps and wording stamps need. Very heavy faces like Black Han Sans hold up at small sizes.
Brush — artist seals and signatures
The hand is still visible in these, which suits artist seals and personal signature seals. Nanum Brush, Gugi and Kirang Haerang belong here.
If you need seal script
Seal script (篆書體), the style on most carved registered seals, has essentially no freely embeddable font. Instead, choose Seal Script under Letter shape: it narrows a heavy serif face and stretches it vertically to imitate that dense, tall proportion. It is not literally seal script, but the impression is close.
Kanji, Japanese and Chinese
Characters like 印 and 代表理事 are present in Noto Serif KR, Noto Sans KR and Nanum Myeongjo. For Japanese kana or simplified Chinese, pick from those groups — Korean faces carry no kana, so they quietly fall back to a default face.